Shell Programming and Scripting

/home-dev/->echo 'a|b|c|d|z' | tr -dc 'a' | wc -c
1
/home-dev/->echo 'a|b|c|d|z' | tr -dc 'd' | wc -c
1
/home-dev/->

% echo "a|b|c|d|z"|perl '-nEsay~~@{[/\|/g]}' 
4

% uname 
CYGWIN_NT-5.1
% echo 'a|b|c|d|z' | tr -dc a | wc -c
1
% echo 'a|b|c|d|z' | tr -dc d | wc -c
1

% uname 
CYGWIN_NT-5.1
% echo 'a|b|c|d|z' | tr -dc a | wc -c
1
% echo 'a|b|c|d|z' | tr -dc d | wc -c
1

$ for sh in bash zsh ksh; do
  eval "$sh -c 'echo \$0 \$(type print)'"
done> >
bash: type: print: not found
bash
zsh print is a shell builtin
ksh print is a shell builtin

echo 'a|b|c|d|z' | sed 's/[^[:punct:][:punct:]]*/\n/g'|sed '/./!d' | wc -l